What is causes of asthma any five ponts

Explanation:

Some risk factors for asthma includes, having genetics that includes family members with asthma. (Such as a parent or sibling.)

Other allergic conditions, such as atopic dermatitis or hay fever, can also be a risk factor. Other risk factors include being overweight, smoking, exposure to secondhand smoke, and exposure to pollution.

Asthma triggers can be pollen, dust mites, mold spores, cockroach waste, respiratory infections (like the common cold.), physical activity, and cold air, to name a few.

c, the cilia in the trachea squeeze the material out of the body as mucus

explanation:

transportation i would say maybe sorry it its not correct